Optical fiber conductor and image scope using same

Abstract

It is disclosed that an optical fiber conductor of glass type characterized in that the optical fiber conductor has a fiber-reinforcing layer which, at least in a desired region of the entire length thereof, is made of a charred material of an organic resin.

What is claimed is: 
     
       1. An optical fiber conductor of glass type characterized in that the optical fiber conductor has a fiber-reinforcing layer which, at least in a desired region of the entire length thereof, is made of a charred material of an organic resin. 
     
     
       2. An optical fiber conductor of glass type as defined in claim 1 wherein the charred material is formed by heating an organic resin at about 250° to about 400° C. for about 5 to about 200 minutes. 
     
     
       3. An optical fiber conductor of glass type as defined in claim 1 wherein the fiber-reinforcing layer made of a charred material is about 2 to 50 μm in thickness, and is obtained by charring an organic resin layer in such an extent that the organic resin layer is reduced in thickness to about 90% or less of the original. 
     
     
       4. An optical fiber conductor of glass type as defined in claim 1 wherein the optical fiber conductor is a single optical fiber of silica glass type. 
     
     
       5. An optical fiber conductor of glass type as defined in claim 1 wherein the optical fiber conductor is a multiple optical fiber of silica glass type. 
     
     
       6. An image scope having, as an image transmitter, a multiple optical fiber which has a fiber reinforcing layer made of a charred material of an organic resin. 
     
     
       7. An image scope as defined in claim 6 wherein the fiber-reinforcing layer made of a charred material is about 2 to 50 μm in thickness, and is obtained by charring an organic resin layer in such an extent that the organic resin layer is reduced in thickness to about 90% or less of the original.